It shows that when the pipeline is half buried and half exposed, and the sand is clay particles, the pipeline has a downward bending trend; when the sand is fine sand or very fine pebbles, the pipeline has a downward bending trend.
It shows that when the pipeline is half buried and half exposed, and the sediment is clay, the pipeline tends to bend downward; when the sediment is fine sand and very fine pebble, the pipeline tends to bend downstream.<br>